Safety performance assessment and improvement of light duty commercial vehicle using Finite Element Analysis

#AIS 119 #Safety regulations #FEA

There has been a reasearch that in india there are more than 10000 annual accident involves  LCV, There are certain government norms that takes care for minimal damage and there are also advanced simulation tools that can be used to simulate govt. norm testing and other possible accident criteria to make vehicle safer in design perspective.
According to the data released by NHTSA, there were 37,461 people killed in crashes in 2016 which is a 5.6% Increase as compared to the previous year [6]. In the past, most of the dynamic analysis were done by testing or contracted out. Now with the use of Computer simulation the dynamic analysis can be simulated to reflect real world testing. Virtual simulation in the computer provides opportunities to reduce development time and also reduces the number of physical prototypes consumed for verification of the design and its validation for safety regulations. Among rear, front impact and rollover accidents, rollover accidents results in severe casualties for occupants.


During frontal impact LCV vehicle follws the following path
1. Frontal Region
2. Front Frame Connections
3. A Pillars

For protection of occupant during frontal impact the govt norms are implemented for vehicle manufacturer AIS 029

AIS 029 (Amendment 1, 2004) is one of the mandatory standards of Automotive Industry Standards (AIS) to ensure truck cabins survival space in three different tests to ensure the occupant protection [1]. This is similar to the ECE-R29 (Rev. 1, Amendment 2, 2007). Three tests are:

Test A: Front Impact Test

Test B: Roof Strength Test  

Test C: Rear wall Strength Test 

Test A is used to ensure the cabin survival space after pendulum front impact. As per Test B, the roof of the cabin shall withstand a static load corresponding to the maximum mass authorized for the front axle or axles of the vehicle, subject to a maximum of 100 kN. The requirement of test C is that the rear wall of the cabin shall be capable of withstanding a static load of 2 kN per tonne of permissible useful load. 

Methodology for pendulum test

Develop Meshing of Truck Frame and Cabin

Research about material properties
Baseline model
Study AIS-029 norm

Hyperworks Radioss

Solving using Explicit Dynamic solver

Suggest design modification

Post process results using hyperview
suggest better design

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+91 9599 755915


+91 9599 755915

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